CN115771220A - Injection molding accessory trimming device - Google Patents
Injection molding accessory trimming device Download PDFInfo
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- CN115771220A CN115771220A CN202310101185.4A CN202310101185A CN115771220A CN 115771220 A CN115771220 A CN 115771220A CN 202310101185 A CN202310101185 A CN 202310101185A CN 115771220 A CN115771220 A CN 115771220A
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- trimming
- injection molding
- bag
- ring sleeve
- push rod
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/62—Plastics recycling; Rubber recycling
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Abstract
The invention relates to the technical field of plastic molding post-processing, in particular to an injection molding accessory trimming device; the method comprises the following steps: a top seat; a base; the base is positioned right below the top seat; the top seat is connected with the base through a supporting rod; an electric push rod is arranged; the upper electric push rod is fixedly connected to the lower end face of the top seat; the output shaft of the upper electric push rod is fixedly connected with the upper pressure plate; a lower electric push rod; the lower electric push rod is fixedly connected to the upper end face of the base; the output shaft of the lower electric push rod is fixedly connected with a lower pressure plate; sleeving a ring; the ring sleeve is positioned between the top seat and the base; the upper part and the lower part of the ring sleeve are both provided with openings; the upper pressure plate and the lower pressure plate are positioned on the inner side of the ring sleeve after moving; trimming the side pocket; according to the invention, the deformable trimming bag scrapes the outer edge of the injection molding part, so that the edge of the injection molding part is trimmed, and meanwhile, the trimming bag can be used for trimming injection molding parts of different specifications and shapes, and the universality is higher.
Description
Technical Field
The invention relates to the technical field of plastic molding post-processing, in particular to an injection molding accessory trimming device.
Background
Injection molding, also known as injection molding, is a method of molding by injection molding, in which a plastic material completely melted is stirred by a screw at a certain temperature, injected into a cavity of a mold under high pressure, and cooled to solidify to obtain a molded article, and is one of the important parts processing methods in the manufacturing industry.
After the injection molding part is molded, the edges of the injection molding part are provided with some flash and burrs, so that the edges of the injection molding part need to be trimmed by some post-processing equipment of the injection molding part, such as trimming equipment.
In view of this, in order to overcome the above technical problems, the present invention provides an injection molding accessory trimming device, which solves the above technical problems.
Disclosure of Invention
In order to make up for the defects of the prior art, the invention provides the trimming device for the injection molding part.
The technical scheme adopted by the invention for solving the technical problems is as follows: the invention relates to an injection molding accessory trimming device, which comprises:
a top seat;
a base; the base is positioned right below the top seat; the top seat is connected with the base through a supporting rod;
an electric push rod is arranged; the upper electric push rod is fixedly connected to the lower end face of the top seat; the output shaft of the upper electric push rod is fixedly connected with the upper pressure plate;
a lower electric push rod; the lower electric push rod is fixedly connected to the upper end face of the base; the output shaft of the lower electric push rod is fixedly connected with a lower pressure plate;
sleeving a ring; the ring sleeve is positioned between the top seat and the base seat; the upper part and the lower part of the ring sleeve are both provided with openings; the upper pressure plate and the lower pressure plate are positioned on the inner side of the ring sleeve after moving;
trimming the edge bag; the trimming bag is annular; the trimming bag is fixedly connected to the inner side of the loop; the upper pressing disc and the lower pressing disc are positioned on the inner side of the trimming bag after moving; the inner side surface of the trimming bag is embedded with trimming particles; the trimming particles may be one or more of grindstones, wires, blades, etc.;
an air pump; the air pump is fixedly connected to the outer side of the ring sleeve; the air pump is communicated with the inner side of the ring sleeve through an air hole;
a controller; the controller is used for controlling the automatic operation of the trimming device.
Preferably, the upper end and the lower end of the ring sleeve are both provided with a limiting disc; the surfaces, close to the two limiting discs, of the two limiting discs are provided with annular grooves; the end part of the ring sleeve is clamped into the corresponding annular groove; the groove wall of the annular groove close to the center is positioned on the inner side of the ring sleeve; the groove wall of the annular groove far away from the center is positioned outside the ring sleeve; the distance between the bottoms of the two annular grooves is equal to the height of the ring sleeve.
Preferably, elastic strips are uniformly arranged on the inner side of the trimming bag and at the lower port of the ring sleeve; the edges of the elastic strips overlap each other; one of the elastic strips is relatively long in length.
Preferably, rectangular grooves are uniformly formed in the outer side walls of the upper pressing plate and the lower pressing plate; the rectangular groove is connected with a rectangular strip in a sliding manner; the bottom of the rectangular groove is connected with the rectangular strip through a spring; the end part of the rectangular strip far away from the spring is fixedly connected with a supporting block; the distance between the upper supporting block and the lower supporting block is equal to the distance between the upper pressure plate and the lower pressure plate.
Preferably, the thickness of the middle part of the trimming bag is larger than that of the end part of the trimming bag; and a gap is reserved between the supporting block and one end of the rectangular strip, which is far away from the corresponding spring.
Preferably, the rectangular strip is connected with the rectangular groove in a sliding and sealing manner; an air passage is arranged inside the rectangular strip; one end of the air passage is communicated with the inner side of the corresponding rectangular groove, and the other end of the air passage is communicated with the end part of the rectangular strip.
Preferably, the lower end of the ring sleeve is rotatably connected with the ring disc; the ring disc is fixedly connected with the supporting rod; the output shaft of the upper electric push rod is fixedly connected with the internal thread cylinder; the lower end of the internal thread cylinder is provided with an opening; the outer wall of the ring sleeve is provided with external threads; the internal thread cylinder is in threaded fit with the outer wall of the ring sleeve.
Preferably, the bottom of the internal thread cylinder is provided with a one-way air inlet hole in a penetrating way; the one-way air inlet hole is communicated with the inner bottom of the internal thread cylinder; and a one-way valve is arranged in the one-way air inlet hole.
The invention has the following beneficial effects:
1. the edge trimming device comprises a trimming bag, a trimming bag and a trimming head, wherein the trimming bag is arranged on the outer edge of the injection molding part, and the trimming bag is arranged on the outer edge of the injection molding part.
2. According to the injection molding accessory trimming device, the trimming position can be adjusted according to the appearance of the injection molding accessory through the loop and the trimming bag, the extrusion pressure of the trimming bag on the injection molding accessory is different, and the extrusion pressure of the trimming bag on the edge of the injection molding accessory tends to be the same through adjusting the position of the trimming bag, so that the trimming degree of the edge of the injection molding accessory tends to be the same.
3. According to the invention, after the injection molding accessory is released from being clamped by the upper pressing disc and the lower pressing disc, the elastic strip can push the injection molding accessory away from between the upper pressing disc and the lower pressing disc, so that the purpose of automatically unloading a workpiece is realized, more importantly, impurities can be pushed away together by the elastic strip in the pushing process, and thus, the impurity residue on the inner side of the trimming bag is reduced.
Drawings
The invention is further described below with reference to the drawings and the embodiments.
FIG. 1 is a perspective view of one embodiment of the present invention;
FIG. 2 is a cross-sectional view of FIG. 1;
FIG. 3 is an enlarged view at A in FIG. 2;
FIG. 4 is a perspective view of another embodiment of the present invention;
fig. 5 is a view showing a position structure of a rectangular bar and a rectangular groove in the present invention.
In the figure: the device comprises a top seat 1, a support rod 11, an upper electric push rod 12, an internal thread cylinder 13, a one-way air inlet hole 131, a base 2, a lower electric push rod 21, an upper pressing plate 3, a rectangular groove 31, a rectangular strip 32, an air passage 321, a spring 33, a support block 34, a lower pressing plate 4, a ring sleeve 5, an air pump 51, an air hole 52, a trimming bag 6, an elastic strip 61, a limiting plate 7, an annular groove 71 and a ring plate 8.
Description of the preferred embodiment
In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further described with the specific embodiments.
As shown in fig. 1 to 5, the trimming apparatus for injection molding accessories according to the present invention comprises:
a top seat 1;
a base 2; the base 2 is positioned under the top seat 1; the top seat 1 is connected with the base 2 through a support rod 11;
an upper electric push rod 12; the upper electric push rod 12 is fixedly connected to the lower end face of the top seat 1; the output shaft of the upper electric push rod 12 is fixedly connected with the upper pressure plate 3;
a lower electric push rod 21; the lower electric push rod 21 is fixedly connected with the upper end surface of the base 2; the output shaft of the lower electric push rod 21 is fixedly connected with the lower pressure plate 4;
a loop 5; the ring sleeve 5 is positioned between the top seat 1 and the base seat 2; the upper part and the lower part of the ring sleeve 5 are both provided with openings; the upper pressing plate 3 and the lower pressing plate 4 are positioned on the inner side of the ring sleeve 5 after moving;
a trimming bag 6; the trimming bag 6 is annular; the trimming bag 6 is fixedly connected to the inner side of the ring sleeve 5; the upper pressing plate 3 and the lower pressing plate 4 are positioned on the inner side of the trimming bag 6 after moving; the inner side surface of the trimming bag 6 is embedded with trimming particles; the trimming particles may be one or more of grindstones, wires, blades, etc.;
an air pump 51; the air pump 51 is fixedly connected to the outer side of the ring sleeve 5; the air pump 51 is communicated with the inner side of the ring sleeve 5 through an air hole 52;
a controller; the controller is used for controlling the automatic operation of the trimming device;
during operation, after an injection molding piece is molded, the edge of the injection molding piece is provided with some flash and burrs, so that the edge of the injection molding piece needs to be trimmed by some post-processing equipment of the injection molding piece, such as trimming equipment, but most trimming equipment in the prior art can only trim parts with the same shape, so that when other injection molding pieces are trimmed, only a mold can be made again to finish trimming of the injection molding piece, and the problem that the existing injection molding piece trimming device is poor in universality is caused;
therefore, in the invention, firstly, the controller controls the upper electric push rod 12 and the lower electric push rod 21 to move, so that the upper electric push rod 12 is shortened, and simultaneously, the lower electric push rod 21 is extended, the upper electric push rod 12 can drive the upper pressure plate 3 to move upwards, the lower electric push rod 21 can drive the lower pressure plate 4 to move upwards, so that the upper pressure plate 3 and the lower pressure plate 4 move to the upper part of the ring sleeve 5 after penetrating through the inner side of the edging bag 6, namely the inner side of the ring sleeve 5, so that the lower pressure plate 4 and the upper pressure plate 3 are exposed, then, the operator places the injection molding accessory between the opened upper pressure plate 3 and the opened lower pressure plate 4, so that the injection molding accessory falls on the upper end of the lower pressure plate 4, and then controls the upper electric push rod 12 to extend through the controller, so that the upper electric push rod 12 drives the upper pressure plate 3 to be close to the injection molding accessory, so that the injection molding accessory is tightly pressed by the upper pressure plate 3 and the lower pressure plate 4, then the controller controls the upper electric push rod 12 and the lower electric push rod 21 to move synchronously, so that the injection molding part moves downwards in the process of ensuring the injection molding part to be clamped, namely the upper pressure plate 3 and the lower pressure plate 4 drive the injection molding part to move downwards and move to the inner side of the trimming bag 6, then the controller controls the air pump 51 to work, the air pump 51 can fill outside air into the inner side of the ring sleeve 5 along the air hole 52, so that the trimming bag 6 swells, the inner side of the trimming bag 6 contacts with the edge of the injection molding part after swelling, then the air pump 51 stops working, the air in the trimming bag 6 cannot leak because the air pump 51 is internally provided with a valve, then a worker controls the upper pressure plate 3 and the lower pressure plate 4 to drive the injection molding part to move downwards or upwards on the inner side of the trimming bag 6, and thus in the process of scraping the injection molding part and the inner wall of the trimming bag 6, burrs on the edge of the injection molding part are scraped through the trimming particles on the inner wall of the trimming bag 6, therefore, burrs on the edge of the injection molding part are scraped and fall off by trimming particles on the inner wall of the trimming bag 6, so that the purpose of trimming the edge of the injection molding part is achieved, the trimming force of the trimming bag 6 is controlled by the amount of gas filled between the trimming bag 6 and the ring sleeve 5 by the air pump 51, the space between the trimming bag 6 and the ring sleeve 5 is called a bag sleeve cavity, the larger the amount of gas filled in the bag sleeve cavity is, the larger the extrusion force of the trimming bag 6 on the edge of the injection molding part is, the larger the friction force between the trimming bag 6 and the injection molding part is, namely, the higher the effect and degree are, one side of the trimming bag 6 close to the center of the ring sleeve 5 is called as the inner side, namely the inner wall, in the application, the trimming bag 6 has certain elastic deformation capacity, so that even if the shape of the injection molding part is irregular, the inner wall of the trimming bag 6 can be fully contacted with the edge of an injection molding accessory, so that the edge of the injection molding accessory is fully trimmed, the trimming bag is suitable for injection molding accessories of different specifications and different shapes, the injection molding accessory is scraped on the inner wall of the trimming bag 6 under the driving of an upper pressure plate 3 and a lower pressure plate 4 and can be moved out from a lower port of a ring sleeve 5, then the lower pressure plate 4 is controlled by a controller to be separated from the upper pressure plate 3, a worker takes out the injection molding accessory between the upper pressure plate 3 and the lower pressure plate 4, namely, the trimming process of the injection molding accessory is completed, then the worker controls the upper pressure plate 3 and the lower pressure plate 4 to penetrate through the inner side of the trimming bag 6 and move to the upper side of the ring sleeve 5 again to perform trimming of the next injection molding accessory, and impurities on the inner side of the trimming bag 6 move out along the lower port of the ring sleeve 5 under the action of gravity;
according to the invention, the deformable trimming bag 6 is used for scraping the outer edge of the injection molding part, so that the edge of the injection molding part is trimmed, and meanwhile, the trimming bag can be used for trimming injection molding parts with different specifications and shapes, and the universality is higher.
As an embodiment of the present invention, the upper end and the lower end of the ring sleeve 5 are both provided with a limiting disc 7; the surfaces, close to each other, of the two limiting discs 7 are provided with annular grooves 71; the end part of the ring sleeve 5 is clamped into the corresponding annular groove 71; the groove wall of the annular groove 71 close to the center is positioned on the inner side of the ring sleeve 5; the groove wall of the annular groove 71 away from the center is positioned outside the ring sleeve 5; the distance between the bottoms of the two annular grooves 71 is equal to the height of the ring sleeve 5;
when the injection molding accessory is in work, in the process that the upper pressing disc 3 and the lower pressing disc 4 clamp and move irregular injection molding accessories to the inner side of the trimming bag 6, the injection molding accessories extrude the trimming bag 6 on the periphery, the trimming bag 6 can transmit extrusion force to the ring sleeve 5 after being extruded, the ring sleeve 5 can move between the two limiting discs 7 after being extruded, the central positions of the ring sleeve 5 and the trimming bag 6 are adjusted, the end part of the ring sleeve 5 is clamped into the corresponding annular groove 71, the ring sleeve 5 cannot be extruded away from the two limiting discs 7 after being extruded, the ring sleeve 5 and the trimming bag 6 can adjust trimming positions according to the shapes of the injection molding accessories, the extrusion force of the trimming bag 6 on the injection molding accessories is different, the extrusion force of the trimming bag 6 on the edges of the injection molding accessories tends to be the same through adjusting the position of the trimming bag 6, and the edge trimming degree of the injection molding accessories tends to be the same.
As an embodiment of the present invention, elastic strips 61 are uniformly arranged inside the trimming bag 6 and at the lower port of the ring sleeve 5; the edges of the elastic strip 61 overlap each other; one of the elastic strips 61 is relatively long;
when the injection molding part is in operation, after the injection molding part is clamped by the upper pressure plate 3 and the lower pressure plate 4 and moves along the inner wall of the trimming bag 6, impurities are generated on the inner side of the trimming bag 6 after trimming the injection molding part, the edge of the injection molding part is only contacted with one elastic strip 61 along with the downward movement of the injection molding part, and the other elastic strips 61 move to the upper part of the injection molding part relatively, so that the impurities can move to a gap formed between one elastic strip 61 and the other elastic strips 61 under the action of gravity, and then the controller controls the lower electric push rod 21 to drive the lower pressure plate 4 to move downward, so that the injection molding part is released from being clamped by the upper pressure plate 3 and the lower pressure plate 4, the injection molding part can be pushed away from the space between the upper pressure plate 3 and the lower pressure plate 4 by the elastic strips 61, the purpose of automatically unloading the workpiece is realized, more importantly, the impurities can be pushed away together by the elastic strips 61 in the pushing process, and the impurity residue on the inner side of the trimming bag 6 is reduced; in this embodiment, the edges of the elastic strips 61 are overlapped with each other, so that after the trimming bag 6 is expanded or contracted, the elastic strips 61 can still be enclosed into a ring shape, impurities generated on the inner side of the trimming bag 6 are blocked, the impurities are prevented from moving to the annular groove 71 beyond the elastic strips 61, cleanness of the annular groove 71 is guaranteed, and then the movement stability of the ring sleeve 5 in the annular groove 71 is guaranteed.
As an embodiment of the present invention, the outer side walls of the upper platen 3 and the lower platen 4 are uniformly provided with rectangular grooves 31; the rectangular groove 31 is connected with a rectangular strip 32 in a sliding manner; the bottom of the rectangular groove 31 is connected with the rectangular strip 32 through a spring 33; the end of the rectangular strip 32 far away from the spring 33 is fixedly connected with a supporting block 34; the distance between the upper supporting block 34 and the lower supporting block is equal to the distance between the upper pressing plate 3 and the lower pressing plate 4;
when the injection molding accessory clamping device works, the spring 33 always gives a pushing force to the rectangular strips 32 away from the center of the ring sleeve 5, so that the rectangular strips 32 slide along the corresponding rectangular grooves 31 under the action of the spring 33, the rectangular strips 32 extend out of the corresponding rectangular grooves 31, and the clamping range of the upper pressing plate 3 and the lower pressing plate 4 on the injection molding accessory is expanded; in the process that the upper platen 3 and the lower platen 4 drive the injection molding part to enter the inner side of the trimming bag 6, the trimming bag 6 can extrude the corresponding rectangular strip 32, the rectangular strip 32 slides along the corresponding rectangular groove 31 under the extrusion of the trimming bag 6, so that the end part of the rectangular strip 32 does not exceed the edge of the injection molding part, the injection molding part can move inside the trimming bag 6, the injection molding part is enabled to move inside the trimming bag 6, the upper platen 3 and the lower platen 4 drive the corresponding supporting block 34 to support the injection molding part in the process that the injection molding part moves inside the trimming bag 6 through the rectangular strip 32 on the upper platen 3 and the lower platen 4, the deformation of the injection molding part in the trimming process is avoided, and the integrity of the injection molding part after trimming is ensured.
As an embodiment of the present invention, the bag thickness of the middle part of the trimming bag 6 is larger than the bag thickness of the end part of the trimming bag 6; a gap is reserved between the supporting block 34 and one end of the rectangular strip 32 far away from the corresponding spring 33;
when the trimming bag 6 works, after the air pump 51 fills outside air into the inner side of the bag sleeve cavity along the air hole 52, the trimming bag 6 bulges, the middle part and the end part of the trimming bag 6 have different thicknesses, so that the bulging degree of the middle part and the end part of the trimming bag 6 is different, namely the expansion degree of the end part of the trimming bag 6 is greater than that of the middle part, so that the upper pressing plate 3 and the lower pressing plate 4 drive the injection molding part to move upwards or downwards from the middle part, the trimming bag 6 can better trim the upper outer edge and the lower outer edge of the injection molding part, meanwhile, in order to avoid the supporting block 34 from obstructing the edge trimming effect of the injection molding part, a gap is reserved between the supporting block 34 and one end of the rectangular strip 32, after the trimming bag 6 extrudes the rectangular strip 32, a certain distance is reserved between the supporting block 34 and the edge of the injection molding part, and the supporting block 34 does not influence the edge processing of the injection molding part while ensuring a better supporting effect.
As an embodiment of the present invention, the rectangular bar 32 is connected with the rectangular groove 31 in a sliding and sealing manner; an air channel 321 is arranged inside the rectangular strip 32; one end of the air passage 321 is communicated with the inner side of the corresponding rectangular groove 31, and the other end is communicated with the end part of the rectangular strip 32;
during operation, as the diameter of the inner wall of the trimming bag 6 is changed, the upper pressing plate 3 and the lower pressing plate 4 drive the injection molding accessory to move on the inner wall of the trimming bag 6, the trimming bag 6 can extrude the rectangular strip 32, the spring 33 always provides thrust for the rectangular strip 32 to be far away from the bottom of the rectangular groove 31, so that the rectangular strip 32 can move back and forth along the corresponding rectangular groove 31 in the up-and-down movement process of the injection molding accessory, gas in the rectangular groove 31 can be discharged along the gas passage 321 in the movement process of the rectangular strip 32 towards the bottom of the rectangular groove 31, and gas discharged from the gas passage 321 can impact the inner wall of the trimming bag 6, so that the inner wall of the trimming bag 6 through which the injection molding accessory passes is cleaned in advance, impurities are reduced to be adhered to the inner wall of the trimming bag 6, and the scraping effect, namely the trimming effect, of the inner wall of the trimming bag 6 on the injection molding accessory is ensured.
As an embodiment of the present invention, the lower end of the ring sleeve 5 is rotatably connected with a ring disc 8; the ring disc 8 is fixedly connected with the support rod 11; the output shaft of the upper electric push rod 12 is fixedly connected with an internal thread cylinder 13; the lower end of the internal thread cylinder 13 is provided with an opening; the outer wall of the ring sleeve 5 is provided with external threads; the internal thread cylinder 13 is in threaded fit with the outer wall of the ring sleeve 5;
when the trimming bag edge trimming device works, the upper pressing plate 3 and the lower pressing plate 4 drive the injection molding accessory to move into the inner side of the trimming bag 6 and lean against the lower part, the internal thread cylinder 13 can be sleeved on the outer side of the ring sleeve 5, so that the internal thread cylinder 13 is in threaded transmission connection with the ring sleeve 5, the internal thread cylinder 13 can drive the rotating sleeve to rotate along with the continuous downward movement of the output shaft of the electric push rod, the rotating sleeve can drive the trimming bag 6 fixedly connected inside the rotating sleeve to rotate, the trimming bag 6 can rotate relative to the injection molding accessory when rotating, the injection molding accessory and the inner wall of the trimming bag 6 can move up and down and simultaneously rotate and move, so that the trimming path of the inner wall of the trimming bag 6 to the edge of the injection molding accessory is prolonged, the edge of the injection molding accessory is trimmed more thoroughly, meanwhile, the internal thread cylinder 13 can extrude gas inside the trimming bag 6 under the extrusion of the internal thread cylinder 13, the gas inside the trimming bag 6 is discharged along the lower port of the ring sleeve 5, and the impurities on the inner wall of the trimming bag 6 can be matched with the self gravity of the impurities on the inner wall of the trimming bag 6 and then move out of the lower port of the ring sleeve 5, so that the impurities inside of the trimming bag 6 can be cleaned; the trimming bag 6 is driven by the ring sleeve 5 to rotate later, the trimming bag 6 can generate wrinkles under the drive of the ring sleeve 5, and the edge trimming effect of the folded trimming bag 6 on the injection molding part is higher; the air pump 51 is arranged at the lower part of the ring sleeve 5, and the internal thread cylinder 13 only moves at the upper part of the ring sleeve 5, so that the interference condition can not occur.
As an embodiment of the present invention, a one-way air inlet hole 131 is penetratingly formed at the bottom of the internally threaded cylinder 13; the one-way air inlet hole 131 is communicated with the inner bottom of the internal thread cylinder 13; a one-way valve is arranged in the one-way air inlet hole 131;
during operation, in the process of screw transmission between the internal thread cylinder 13 and the ring sleeve 5, the internal thread cylinder 13 can extrude gas on the inner side of the trimming bag 6, and because the one-way gas inlet hole 131 is internally provided with the one-way valve, the gas on the inner side of the trimming bag 6 can be discharged along the lower port of the ring sleeve 5, so that impurities on the inner side of the trimming bag 6 can be taken out, and in the process of moving the internal thread cylinder 13 upwards, the one-way gas inlet hole 131 at the bottom of the internal thread cylinder 13 is opened, and external gas can enter the inner side of the internal thread cylinder 13 along the one-way gas inlet hole 131 and supplement the gas on the inner side of the trimming bag 6, so that the impurities are prevented from being brought into the inner side of the trimming bag 6 by the gas around the lower port of the ring sleeve 5, the gas on the inner side of the trimming bag 6 can only move from top to bottom, and the effect of cleaning the impurities in the trimming bag 6 is improved; the embodiment can meet the requirement that the inner thread cylinder 13 moves up and down on the outer wall of the ring sleeve 5.
The specific working process is as follows:
the operator controls the upper electric push rod 12 and the lower electric push rod 21 to move through the controller, so that the upper electric push rod 12 is shortened and the lower electric push rod 21 is simultaneously lengthened, the upper electric push rod 12 drives the upper platen 3 to move upwards, the lower electric push rod 21 drives the lower platen 4 to move upwards, so that the upper platen 3 and the lower platen 4 move to the upper side of the ring 5 after passing through the inner side of the trimming bladder 6, so that the lower platen 4 and the upper platen 3 are exposed, then the operator places the injection molding part between the opened upper platen 3 and the opened lower platen 4, so that the injection part falls on the upper end of the lower platen 4, then the operator controls the upper electric push rod 12 to extend through the controller, so that the upper electric push rod 12 drives the upper platen 3 to be close to the injection part, so that the injection part is pressed by the upper platen 3 and the lower platen 4, then the controller controls the upper electric push rod 12 and the lower electric push rod 21 to move synchronously, so that the injection part moves down in the process of ensuring that the injection part is clamped, i.e. the upper platen 3 and the lower platen 4 move down and move to the edge of the trimming bladder 6 and the air pump 6, so that the air pump controls the air pump to scrape the inner side of the trimming bladder 6, so that the inner side of the edge of the trimming bladder 6 is scraped edge of the injection part, so that the air pump 6 is scraped, so that the air pump 6 is contacted with the air pump 6, so that the air pump 6, therefore, burrs on the edge of the injection molding part are scraped and fall off by trimming particles on the inner wall of the trimming bag 6, so that the purpose of trimming the edge of the injection molding part is achieved, the trimming force of the trimming bag 6 is controlled by the amount of gas filled between the trimming bag 6 and the ring sleeve 5 by the air pump 51, the space between the trimming bag 6 and the ring sleeve 5 is called a bag sleeve cavity, the larger the amount of gas filled in the bag sleeve cavity is, the larger the extrusion force of the trimming bag 6 on the edge of the injection molding part is, the larger the friction force between the trimming bag 6 and the injection molding part is, namely, the higher the effect and degree are, one side of the trimming bag 6 close to the center of the ring sleeve 5 is called as the inner side, namely the inner wall, in the application, the trimming bag 6 has certain elastic deformation capacity, so that even if the shape of the injection molding part is irregular, the inner wall of the trimming bag 6 can be fully contacted with the edge of an injection molding accessory, so that the edge of the injection molding accessory is fully trimmed, the trimming bag is suitable for injection molding accessories of different specifications and different shapes, the injection molding accessory is scraped on the inner wall of the trimming bag 6 under the driving of an upper pressure plate 3 and a lower pressure plate 4 and can be moved out from a lower port of a ring sleeve 5, then the lower pressure plate 4 is controlled by a controller to be separated from the upper pressure plate 3, a worker takes out the injection molding accessory between the upper pressure plate 3 and the upper pressure plate 3, namely, the trimming process of the injection molding accessory is completed, then the worker controls the upper pressure plate 3 and the lower pressure plate 4 to pass through the inner side of the trimming bag 6 and move to the upper side of the ring sleeve 5 again to perform trimming of the next injection molding accessory, and impurities on the inner side of the trimming bag 6 move out along the lower port of the ring sleeve 5 under the action of gravity;
during the process that the upper pressing disc 3 and the lower pressing disc 4 clamp and move irregular injection molding accessories to the inner side of the trimming bag 6, the injection molding accessories can extrude the surrounding trimming bag 6, the trimming bag 6 can transmit extrusion force to the ring sleeve 5 after being extruded, so that the ring sleeve 5 can move between the two limiting discs 7 after being extruded, the central positions of the ring sleeve 5 and the trimming bag 6 are adjusted, the end part of the ring sleeve 5 is clamped into the corresponding annular groove 71, the ring sleeve 5 cannot be extruded between the two limiting discs 7 after being extruded, and meanwhile, the ring sleeve 5 and the trimming bag 6 can adjust trimming positions according to the appearance of the injection molding accessories; after the injection molding part is clamped by the upper pressure plate 3 and the lower pressure plate 4 and moves along the inner wall of the trimming bag 6, impurities are generated on the inner side of the trimming bag 6 after the injection molding part is trimmed, the edge of the injection molding part is only contacted with one elastic strip 61 along with the downward movement of the injection molding part, and the other elastic strips 61 relatively move to the upper part of the injection molding part, so that the impurities move to a gap formed between one elastic strip 61 and the other elastic strips 61 under the action of gravity, then the controller controls the lower electric push rod 21 to drive the lower pressure plate 4 to move downward, so that the injection molding part is released from being clamped by the upper pressure plate 3 and the lower pressure plate 4, the elastic strips 61 push the injection molding part away from the gap between the upper pressure plate 3 and the lower pressure plate 4, the purpose of automatically unloading the workpiece is realized, more importantly, the elastic strips 61 push the impurities away together during the pushing process, the springs 33 always give a pushing force far away from the centers of the rectangular strips 32 to the rectangular ring 5, so that the rectangular strips 32 slide along the corresponding rectangular grooves 31 under the action of the springs 33, and the rectangular strips 32 extend out of the injection molding part and the rectangular grooves 31; while the upper platen 3 and the lower platen 4 drive the injection molding part to enter the inner side of the trimming bag 6, the trimming bag 6 can extrude the corresponding rectangular strip 32, the rectangular strip 32 slides along the corresponding rectangular groove 31 under the extrusion of the trimming bag 6, so that the end part of the rectangular strip 32 does not exceed the edge of the injection molding part, thereby ensuring that the injection molding part can move in the inner side of the trimming bag 6, and when the upper platen 3 and the lower platen 4 drive the injection molding part to move in the inner side of the trimming bag 6, the rectangular strips 32 on the upper platen 3 and the lower platen 4 drive the corresponding supporting blocks 34 to support the injection molding part, after the air pump 51 fills the outside air into the inner side of the bag sleeve cavity along the air holes 52, the trimming bag 6 is bulged, and the thicknesses of the middle part and the end part of the trimming bag 6 are different, therefore, the middle part and the end part of the trimming bag 6 have different swelling degrees, namely the end part of the trimming bag 6 expands more than the middle part, the upper pressure plate 3 and the lower pressure plate 4 drive the injection molding accessory to move on the inner wall of the trimming bag 6, the trimming bag 6 can extrude the rectangular strip 32, and the spring 33 always provides thrust for the rectangular strip 32 to be far away from the bottom of the rectangular groove 31, so that the rectangular strip 32 can move back and forth along the corresponding rectangular groove 31 in the up-and-down movement process of the injection molding accessory, the gas in the rectangular groove 31 can be discharged along the gas passage 321 in the movement process of the rectangular strip 32 towards the bottom of the rectangular groove 31, and the gas discharged from the gas passage 321 can impact the inner wall of the trimming bag 6, so that the inner wall of the trimming bag 6 through which the injection molding accessory passes is cleaned in advance;
in the process that the upper pressing plate 3 and the lower pressing plate 4 drive the injection molding accessory to move into the inner side of the trimming bag 6 and lean against the lower part, the internal thread cylinder 13 can be sleeved on the outer side of the ring sleeve 5, so that the internal thread cylinder 13 is in threaded transmission connection with the ring sleeve 5, the internal thread cylinder 13 can drive the rotating sleeve to rotate along with the continuous downward movement of an output shaft of the electric push rod, the rotating sleeve can drive the trimming bag 6 fixedly connected inside the internal thread cylinder to rotate, the trimming bag 6 rotates relative to the injection molding accessory, the injection molding accessory and the inner wall of the trimming bag 6 are enabled to move up and down and simultaneously rotate and displace, so that the trimming path of the inner wall of the trimming bag 6 to the edge of the injection molding accessory is prolonged, the edge of the injection molding accessory is trimmed more thoroughly, meanwhile, the internal thread cylinder 13 can extrude gas inside the trimming bag 6, the gas inside the trimming bag 6 is exhausted along the lower port of the ring sleeve 5 under the extrusion of the internal thread cylinder 13, and the impurities on the inner wall of the trimming bag 6 are matched with the self gravity of the impurities, and then move out of the lower port of the ring sleeve 5, so that the impurities inside of the trimming bag 6 are cleaned; the trimming bag 6 is driven by the ring sleeve 5 to rotate subsequently, the trimming bag 6 can generate wrinkles under the drive of the ring sleeve 5, the internal thread barrel 13 can extrude gas inside the trimming bag 6 in the process of the thread transmission of the internal thread barrel 13 and the ring sleeve 5, the gas inside the trimming bag 6 can be discharged along the lower port of the ring sleeve 5 due to the fact that the one-way air inlet hole 131 is internally provided with the one-way valve, impurities inside the trimming bag 6 can be discharged, the one-way air inlet hole 131 at the bottom of the internal thread barrel 13 is opened in the process of moving the internal thread barrel 13 upwards, external gas can enter the inner side of the internal thread barrel 13 along the one-way air inlet hole 131, and the gas inside the trimming bag 6 can be supplemented.
In the description of the present invention, it should be noted that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate orientations or positional relationships based on those shown in fig. 1, and are only for convenience of description and simplicity of description, but do not indicate or imply that the referred devices or elements must have a specific orientation, be constructed and operated in a specific orientation, and thus are not to be construed as limiting the scope of the present invention, and furthermore, the terms "first", "second", "third", etc., are only used for distinguishing the description and are not to be construed as indicating or implying relative importance.
The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (8)
1. An injection molding accessory trimming device, comprising:
a top seat (1);
a base (2); the base (2) is positioned under the top seat (1); the top seat (1) is connected with the base (2) through a support rod (11);
an upper electric push rod (12); the upper electric push rod (12) is fixedly connected to the lower end face of the top seat (1); the output shaft of the upper electric push rod (12) is fixedly connected with the upper pressure plate (3);
a lower electric push rod (21); the lower electric push rod (21) is fixedly connected to the upper end face of the base (2); the output shaft of the lower electric push rod (21) is fixedly connected with the lower pressure plate (4);
a loop (5); the ring sleeve (5) is positioned between the top seat (1) and the base (2); the upper part and the lower part of the ring sleeve (5) are both provided with openings; the upper pressing plate (3) and the lower pressing plate (4) are positioned on the inner side of the ring sleeve (5) after moving;
a trimming bag (6); the trimming bag (6) is annular; the trimming bag (6) is fixedly connected with the inner side of the ring sleeve (5); the upper pressing plate (3) and the lower pressing plate (4) are positioned on the inner side of the trimming bag (6) after moving; the inner side surface of the trimming bag (6) is embedded with trimming particles;
an air pump (51); the air pump (51) is fixedly connected to the outer side of the ring sleeve (5); the air pump (51) is communicated with the inner side of the ring sleeve (5) through an air hole (52);
a controller; the controller is used for controlling the automatic operation of the trimming device.
2. An injection molding accessory trimming apparatus as claimed in claim 1, wherein: the upper end and the lower end of the ring sleeve (5) are provided with limit discs (7); annular grooves (71) are formed in the surfaces, close to each other, of the two limiting discs (7); the end part of the ring sleeve (5) is clamped into the corresponding annular groove (71); the groove wall of the annular groove (71) close to the center is positioned on the inner side of the ring sleeve (5); the groove wall of the annular groove (71) far away from the center is positioned outside the ring sleeve (5).
3. An injection molding accessory trimming apparatus as claimed in claim 2, wherein: elastic strips (61) are uniformly arranged on the inner side of the trimming bag (6) and at the lower end opening of the ring sleeve (5); the edges of the elastic strips (61) overlap each other; one of the elastic strips (61) is relatively long in length.
4. The apparatus of claim 3, wherein the trimming mechanism comprises: the outer side walls of the upper pressure plate (3) and the lower pressure plate (4) are uniformly provided with rectangular grooves (31); the rectangular groove (31) is connected with a rectangular strip (32) in a sliding way; the bottom of the rectangular groove (31) is connected with the rectangular strip (32) through a spring (33); the end part of the rectangular strip (32) far away from the spring (33) is fixedly connected with a supporting block (34); the distance between the upper supporting block (34) and the lower supporting block (34) is equal to the distance between the upper pressing plate (3) and the lower pressing plate (4).
5. An injection molding accessory trimming apparatus as claimed in claim 4, wherein: the thickness of the middle part of the trimming bag (6) is larger than that of the end part of the trimming bag (6); and a gap is reserved between the supporting block (34) and one end, far away from the corresponding spring (33), of the rectangular strip (32).
6. An injection molding accessory trimming apparatus as claimed in claim 5, wherein: the rectangular strip (32) is connected with the rectangular groove (31) in a sliding and sealing mode; an air channel (321) is arranged inside the rectangular strip (32); one end of the air passage (321) is communicated with the inner side of the corresponding rectangular groove (31), and the other end of the air passage is communicated with the end part of the rectangular strip (32).
7. An injection molding accessory trimming apparatus as claimed in claim 1, wherein: the lower end of the ring sleeve (5) is rotatably connected with a ring disc (8); the ring disc (8) is fixedly connected with the supporting rod (11); the output shaft of the upper electric push rod (12) is fixedly connected with an internal thread cylinder (13); the lower end of the internal thread cylinder (13) is provided with an opening; the outer wall of the ring sleeve (5) is provided with an external thread; the internal thread cylinder (13) is in threaded fit with the outer wall of the ring sleeve (5).
8. The apparatus of claim 7, wherein: the bottom of the internal thread cylinder (13) is provided with a one-way air inlet hole (131) in a penetrating way; a one-way valve is arranged in the one-way air inlet hole (131).
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| Application Number | Priority Date | Filing Date | Title |
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| CN202310101185.4A CN115771220B (en) | 2023-02-13 | 2023-02-13 | Trimming device for injection molding accessories |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310101185.4A CN115771220B (en) | 2023-02-13 | 2023-02-13 | Trimming device for injection molding accessories |
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| CN115771220A true CN115771220A (en) | 2023-03-10 |
| CN115771220B CN115771220B (en) | 2023-04-28 |
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| CN116811087A (en) * | 2023-08-30 | 2023-09-29 | 福建泉州振跃工艺品有限公司 | Automatic trimming device for resin artwork production |
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|---|---|
| CN115771220B (en) | 2023-04-28 |
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